Patent · US Active

Light emitting device

US8089084B2 · kind B2 · utility

11Cited by

50References

33Claims

0Family size

Assignee

Seoul Semiconductor Co., Ltd. · KR

Inventors

Gundula Roth · Levenhagen, DE
Walter Tews · Greifswald, DE
Chung Hoon Lee · Ansan-si, KR

Key dates

Filing date	Apr 4, 2008
Grant date	Jan 3, 2012
Priority date	—
Expiry date	May 9, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8512
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A light emitting device can be characterized as including a light emitting diode configured to emit light and a phosphor configured to change a wavelength of the light. The phosphor substantially covers at least a portion of the light emitting diode. The phosphor includes a compound having a host material. Divalent copper ions and oxygen are components of the host material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.